By default when you add a Google Tag (GA4) in Google Tag Manager the send_page_view parameter is set to true. In GA4, when you enable "Enhanced Measurement" the "Page View" toggle is on and cannot be disabled.
Does the send_page_view parameter need to be set to false in the Google Tag settings in GTM in this case?
I tried debug mode and could not see a double page_view event, but this doesn't clarify what the proper setup should be.
It's okay, no need to change anything. The only way to send a pageview is via the send_page_view parameter in Google Tag. By disabling it, you won't be able to see any pageviews. The Enhanced Measurement feature includes the Pageview setting, which allows you to change the page counting method for server-side rendering pages or SPAs. You can find this setting under the Advanced tab.